package com.keyinong.park.imgdownload;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class ImgNameMD5 {
	 public static String getMD5(String content) {
	        try {
	            MessageDigest digest = MessageDigest.getInstance("MD5");
	            digest.update(content.getBytes());
	            return getHashString(digest);
	            
	        } catch (NoSuchAlgorithmException e) {
	            e.printStackTrace();
	        }
	        return null;
	    }
	    
	    private static String getHashString(MessageDigest digest) {
	        StringBuilder builder = new StringBuilder();
	        for (byte b : digest.digest()) {
	            builder.append(Integer.toHexString((b >> 4) & 0xf));
	            builder.append(Integer.toHexString(b & 0xf));
	        }
	        return builder.toString();
	    }

}
